. 2020 Jul 8;20:45. doi: 10.1186/s40644-020-00320-3

Table 1.

Clinical characteristics and subjective CT findings of lung adenocarcinomas and granulomatous lesions in in patients with SCSNs

	Training set (n = 150)			External validation set(n = 64)
	Lung Adenocarcinomas (77)	Granulomatous Lesions (73)	P Value	Lung Adenocarcinomas (35)	Granulomatous Lesions (29)	P Value
Gender
Male	35	48	0.012*	17	14	0.981
Female	42	25	0.012*	18	15	0.981
Age (mean ± SD, years)	58.44 ± 10.97	52.29 ± 12.82	0.006*	56.60 ± 9.52	55.48 ± 13.41	0.599
Size (mean ± SD, mm)	8.49 ± 1.43	8.41 ± 1.35	0.357	8.78 ± 1.75	8.20 ± 2.71	0.608
Location
Upper and Middle	52	49	0.957	24	15	0.169
Lower	25	24	0.957	11	14	0.169
Margin
Irregular	56	34	0.001*	26	13	0.016*
Regular	21	39	0.001*	9	16	0.016*
Lobulated sharp
Absence	30	52	< 0.001*	15	21	0.018*
Presence	47	21	< 0.001*	20	8	0.018*
Spiculated sign
Absence	59	64	0.078	29	26	0.676
Presence	18	9	0.078	6	3	0.676
Rad-score (mean ± SD)	0.62 ± 0.17	0.40 ± 0.15	< 0.001*	0.58 ± 0.19	0.37 ± 0.16	< 0.001*

Note. The differences were assessed by Wilcoxom Rank Sum test or Pearson χ2 test, as appropriate. SD: standard deviation. *p < 0.05. SCSNs: sub-centimeter solid nodules